diff options
| author |   Chad Austin <chadaustin@fb.com> | 2019-01-28 16:34:34 -0800 |
|---|---|---|
| committer |   Miklos Szeredi <mszeredi@redhat.com> | 2019-02-13 13:15:15 +0100 |
| commit | fabf7e0262d0bd57739d29aeac94c44b0542ff1f (patch) | |
| tree | 3aab55728f04c6b7fc6d0b36de30f8b6ccbe2acc /fs | |
| parent | fuse: support clients that don't implement 'opendir' (diff) | |
| download | linux-dev-fabf7e0262d0bd57739d29aeac94c44b0542ff1f.tar.xz linux-dev-fabf7e0262d0bd57739d29aeac94c44b0542ff1f.zip | |
fuse: cache readdir calls if filesystem opts out of opendir
If a filesystem returns ENOSYS from opendir and thus opts out of
opendir and releasedir requests, it almost certainly would also like
readdir results cached. Default open_flags to FOPEN_KEEP_CACHE and
FOPEN_CACHE_DIR in that case.
With this patch, I've measured recursive directory enumeration across
large FUSE mounts to be faster than native mounts.
Signed-off-by: Chad Austin <chadaustin@fb.com>
Signed-off-by: Miklos Szeredi <mszeredi@redhat.com>
Diffstat (limited to 'fs')
| -rw-r--r-- | fs/fuse/file.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/fs/fuse/file.c b/fs/fuse/file.c index cc6ffd23b80f..06096b60f1df 100644 --- a/fs/fuse/file.c +++ b/fs/fuse/file.c @@ -124,7 +124,8 @@ int fuse_do_open(struct fuse_conn *fc, u64 nodeid, struct file *file, return -ENOMEM; ff->fh = 0; - ff->open_flags = FOPEN_KEEP_CACHE; /* Default for no-open */ + /* Default for no-open */ + ff->open_flags = FOPEN_KEEP_CACHE | (isdir ? FOPEN_CACHE_DIR : 0); if (isdir ? !fc->no_opendir : !fc->no_open) { struct fuse_open_out outarg; int err; |